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(No Model.) 2 Sheets-Sheet 2.

P. J. BODE. Y 'SMOKBLBSS BDILER FUMACL No. 526,289. Patented Sept. 18,1:894.

UNITED STATES PATENT OFFICE.

PETER J. BODE, OF ST. LOUIS, MISSOURI, ASSIGNOR ONE-EIGHTH TO SOPHIACUTLER, OF SAME PLACE.

SMQKELESS BOILER-FURNACE.

SPECIFICATION forming part of'Letters :Patent No. 526,289, datedseptember 18, 1894. Application ma March e, 1894. sel-in No. 502,516.(roman.)

To all whom it may con/cern:

Be it known that I, PETER J. BODE, acitizen of the United States, and aresident of St. Louis, State of Missouri, have invented certain new anduseful Improvements in Smokeless Boiler-Furnaces, of which the followingis a full, clear, and exact description, reference being had to theaccompanying drawings, forming a part hereof.

My invention relates to improvements in a smokeless boiler furnace, andconsists in the novel application and construction of parts, as will bemore fully hereinafter described and set forth in the claims.

The object of my improvement is to apply a construction known as gasretorts under a boiler in boiler furnaces in order that the heat of thefire may be utilized to make fuel for maintaining the fire and also tofurnish gas which may be used in connection with the fire or`used forilluminating purposes. The product of these retorts is commonly known ascoke and by its use, a very small amount of smoke is made While at thesame time a higher temperature is reached. It is not necessary to detailthe process of `manufacturing gas as the necessary elements required toproduce the desired resultare well known; two of these elements beingtheproper kind of coal and a sufficiently high temperature to extractthe gas from the coal, leaving the same in the form of coke. By thearrangement of the parts as shown in the drawings, what little smokecomes from the re in front, is consumed by the other fire which islocated in the rear. The object therefore is to construct a boilerfurnace which will not make smoke; that is not emit smoke from thestack, means being provided for consuming such small amounts of smokethat may be made.

This feature of the invention makes the furnace a valuable one in viewof the laws of some cities prohibiting smoke,- but the main advantagesappear to lie in the saving that is made by using coal, and utilizingboth of the articles derived therefrom, using the coke for the ire andthe gas for illuminating or heating purposes. It seems that the amountof coke produced would be far in excess of ness of the device is alsoapparent as the amount of ashes from the fireis less and the coke ismuch cleaner in handling.

It is thought that the peculiar combination' 'of elements and principlesas exhibited in this invention will prove the statementsthat are impliedas to its usefulness and superiority over other furnaces in manufacture.

In the drawings z-Figure 1 `is a vertical longitudinal sectional view ofmy complete invention, as taken on the line A-A in Fig. 2. Fig. 2 is thefront elevation of the boiler furnace as constructed after the method ofmy invention. Fig.3 is a vertical transverse sectional view taken on theline B-B in Fig. l. Fig. 4 'is a similar View taken on the line O Ov inFig. 1. Fig. 5 is an enlarged end View of one of the parts of theinvention. Fig. 6 is an end enlarged view of one of the retort doors ofwhich the part shown in Fig. 5 is a portion. Fig. 7 is an inverted plansectional view of one of the doors, showing the alternate position ofthe lock in dotted lines. Fig. 8 is an enlarged end view of the pinshown in Fig. 5, showing the manner of its'application.

Referring to the drawings:-The furnace proper consists of a front wall lagainst which the boiler front 2 is secured, a bridge wall 3, adeflecting wall 4E, the rear end wall 5 and the side walls 6.

The boiler 7 is set in the usual manner and the necessary flues andpassages are constructed to form the draft. Under the boiler 7 and ateach side are located retorts 8, which consist of the shells 9constructed after the this particular line of usual manner and providedupon the ends are providedwith pipes l2 which convey the gas to thesupply tank.

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The grate bars 13 are supported by transverse bars 14 in the firechamber 15 which is located between the front wall 1 and the bridge wall3. t

The boiler front 2 and wall 1 are constructed in the usual manner withtiring apertures 16 and openings 17 for the removal of ashes and anyaccumulation under the grate bars, these openings adapted to be closedby suit-able doors.

Between the bridge wall 3 and the deflecting wall 4 are located twocanted walls 1S suitably banked up from beneath and running transverselyunder thel boiler. Supporting bars 19 connect the two walls and form afoundation for grate bars 2O which run transversely across the boilerfurnace between the two side Walls 6, the firing being done from Thefiring apertures 21 and the opening for position and that side of theboiler furnace is provided with a front 23 through which prothose shownas issuing from the front of the boiler furnace, except that they are ofa diifertorts 24 are tapered as particularly shown in Fig. 1 in orderthat a greater heating surface is provided, as the heat from the frontfire passes over the bridge wall and enheat from the rear fireencounters them from underneath at the same time consuming any smokethat may come from the front fire.

I will now describe the construction of the retort front, which is alittle different from others in that they are very easily closed and calconstruction. The front ends of the retorts are provided with asurrounding flange 11 in one side of which is secured a pin 36 having aflange 37 at its outer extremity and a similar flange 38 near the middleof its length. In the flange 11 opposite to the pin 36 is pivoted anoscillatory pin 39, the pivot 40 of this pin acting as a pin for thehinge connection between the lugs 41 upon the said flange 35 and thelugs 42 upon the door 43. The locking device consists of aframe 44carrying a screw 45 and wheel46 for its manipulation and a foot 47 uponthe lower vend of the screw to engage against the door 43 in order tolock it against the fiange 11. The frame 44 is laterally adjustable froma line with the pin 39 owing to its connection therewith as shown in thedrawings, while the free end of said frame 44 is provided with lips 48which lit each side of the pin 36 between the flanges 37 and 38.

In Fig. 7 I have shown the locking device A opened out so that the doorcan be opened and the coke removed from the retort and in Fig. 6 isshown the manner of opening the locking device away from the pin 36. InFig. 7 is shown a gasket 49 which is let into the inner side of the door43 to make the retort per-v fectly gas tight.

Pipes 50 are connected with the pipes 12, which lead to the retorts 8,and are shown in dotted lines in Figs. 1 and 2 as leading t0 horizontalpipes 5l (also shown in the said figures) the said horizontal pipes 51being located above the grates to consume the smoke that may come fromthe fire, the horizontal pipes being constructed to jet the gas. It isapparent that the jets of gas could be introduced into any parts of thefurnace to facilitate the heating of the retorts or boiler or theburning of the smoke that issues from the fire and the illustrationgiven is simply shown to set forth this feature of the invention;

. namely the use of the gas manufactured by the device in its ownoperation. the side of the furnace as is shown in Fig. 4.

As above stated, the gas can also be con- I veyed to a side tank fromwhich it can be removal of ashes 22 are located in the usual l used forilluminating, heating or other pur- 1 poses; or part of the gas may beused in the furnace and part in the supply tank. trude two retorts 24,similarly constructed to It will be seen that theconstruction of this'boiler furnace enables the handling of the fuel in such a manner ,as toprevent any 'ent form. The forward ends of the two re- 1 smoke fromcoming out of the smoke stack g and as this is the principal feature andobject of the invention, it is thought that the stateiments as to itseffectiveness are fully subf stantiated. counters the front of theretorts, and the j The location of the gas jets within the ,boilerfurnace not only produces a greater heat but also provides for theconsuming of Whatever smoke may issue from the fire by the placing ofthe jets in a suitable position.

Having fully described my invention, what I claim issealed without thecomplication of a mechani- 1. The combination in a boiler furnace,

provided with two combustion chambers partially separated from eachother by a bridge wall of longitudinal retorts located in one of l thesaid compartments and transverse retorts located in the othercompartment, substantially as described.

2. The combination in a boiler furnace, provided with two combustionchambers, partially separated from each other by a bridge wall, of asmoke stack connected with the second of the said chambers, retortslocated in the first of the said chambers, and transverse retortslocated in the second chamber behind the said bridge wall, the saidtransverse retorts having inclined forward faces substantially asdescribed.

3. The combination in a boiler furnace, provided with two combustionchambers, partially separated from each other by a bridge wall, of asmoke stack connected with the second of the said chambers, retortslocated in the first chamber, transverse retorts located in the secondchamber behind the said bridge wall, the .said transverse retorts havinglinclined forward faces, pipes connected with the interior of theseveral retorts and discharging into the corresponding combustion IIO ypassing through each of the frames and bearing on the correspondingdoor, substantially Io as described.

In testimony whereof I alix my signature in. d the presence of twowitnesses.

PETER J. BODE. Witnesses:

HERBERT S. ROBINSON, ALFRED A. EIcKs.

